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$^{61}$Cr as a Doorway to the $N = 40$ Island of Inversion
/ Lalanne, L. (Leuven U. ; CERN ; Strasbourg, IPHC) ; Athanasakis-Kaklamanakis, M. (Leuven U. ; CERN) ; Dao, D.D. (Strasbourg, IPHC) ; Koszorús, Á. (Leuven U.) ; Liu, Y.C. (Peking U., SKLNPT) ; Mancheva, R. (Leuven U. ; CERN) ; Nowacki, F. (Strasbourg, IPHC) ; Reilly, J. (Manchester U.) ; Bernerd, C. (CERN) ; Chrysalidis, K. (CERN) et al.
This paper reports on the measurement of the ground-state spin and nuclear magnetic dipole moment of $^{61}$Cr. [...]
arXiv:2409.07324.
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Ionization potential of radium monofluoride
/ Wilkins, S.G. (MIT) ; Perrett, H.A. (Manchester U.) ; Udrescu, S.M. (MIT) ; Kyuberis, A.A. (U. Groningen, VSI) ; Pašteka, L.F. (U. Groningen, VSI ; Comenius U.) ; Au, M. (CERN ; Mainz U.) ; Belošević, I. (MIT ; TRIUMF) ; Berger, R. (Philipps U. Marburg) ; Binnersley, C.L. (Manchester U.) ; Bissell, M.L. (Manchester U.) et al.
The ionization potential (IP) of radium monofluoride (RaF) was measured to be 4.969(2)[10] eV, revealing a relativistic enhancement in the series of alkaline earth monofluorides. [...]
arXiv:2408.14673.
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Benchmark evaluation of a single frequency continuous wave OPO seeded pulsed dye amplifier for high-resolution laser spectroscopy
/ Urquiza-González, M (Unlisted, DE) ; Au, M (CERN ; Mainz U.) ; Bernerd, C (Leuven U.) ; Bissell, M (Manchester U.) ; van den Borne, B (Leuven U.) ; Chrysalidis, K (CERN) ; Cocolios, T E (Leuven U.) ; Fedosseev, V N (CERN) ; Flanagan, K T (Manchester U.) ; Garcia Ruiz, R G (MIT) et al.
The study of the atomic spectrum via resonant laser excitation provides access to underlying effects caused by the nuclear structure, which is of special interest in short-lived radioisotopes produced at Isotope Separator On-Line (ISOL) facilities. Current implementations of resonant laser ionization techniques often limit the extraction of the nuclear observables due to the low spectral resolution of the pulsed laser systems deployed. [...]
2023
- Published in : Proc. SPIE 12399 (2023) 123990M
In : 26th Solid State Lasers XXXII: Technology and Devices (SPIE LASE), San Fancisco, CA, USA, 28 Jan - 3 Feb 2023, pp.123990M
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Precision spectroscopy and laser-cooling scheme of a radium-containing molecule
/ Udrescu, S M (MIT) ; Wilkins, S G (MIT) ; Breier, A A (Kassel U.) ; Athanasakis-Kaklamanakis, M (CERN ; Leuven U.) ; Ruiz, R F Garcia (MIT) ; Au, M (CERN ; Mainz U.) ; Belošević, I (TRIUMF) ; Berger, R (Philipps U. Marburg) ; Bissell, M L (Manchester U.) ; Binnersley, C L (Manchester U.) et al.
Molecules containing heavy radioactive nuclei are predicted to be extremely sensitive to violations of the fundamental symmetries of nature. The nuclear octupole deformation of certain radium isotopes massively boosts the sensitivity of radium monofluoride molecules to symmetry-violating nuclear properties. [...]
2024 - 14 p.
- Published in : Nature Phys. 20 (2024) 202-207
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Radiative lifetime of the A 2Π1/2 state in RaF with relevance to laser cooling
/ ISOLDE Collaboration
The radiative lifetime of the $A$$^2 \Pi_{1/2}$ (v=0) state in radium monofluoride (RaF) is measured to be 35(1) ns. The lifetime of this state and the related decay rate $\Gamma = 2.86(8) \times 10^7$$s^{-1}$ are of relevance to the laser cooling of RaF via the optically closed $A$$^2 \Pi_{1/2} \leftarrow X$$^2\Sigma_{1/2}$ transition, which makes the molecule a promising probe to search for new physics. [...]
arXiv:2403.09336.-
2024-07-22 - 8 p.
- Published in : Phys. Rev. A 110 (2024) L010802
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Observation of the distribution of nuclear magnetization in a molecule
/ Wilkins, S.G. (MIT) ; Udrescu, S.M. (MIT) ; Athanasakis-Kaklamanakis, M. (CERN ; Leuven U.) ; Garcia Ruiz, R.F. (MIT) ; Au, M. (CERN ; Mainz U.) ; Belošević, I. (TRIUMF) ; Berger, R. (Philipps U. Marburg) ; Bissell, M.L. (Manchester U.) ; Breier, A.A. (Kassel U.) ; Brinson, A.J. (MIT) et al.
Rapid progress in the experimental control and interrogation of molecules, combined with developments in precise calculations of their structure, are enabling new opportunities in the investigation of nuclear and particle physics phenomena. [...]
arXiv:2311.04121.
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Voltage scanning and technical upgrades at the Collinear Resonance Ionization Spectroscopy experiment
/ Athanasakis-Kaklamanakis, Michail (CERN ; Leuven U.) ; Reilly, Jordan R. (Manchester U.) ; Koszorús, Ágota (CERN) ; Wilkins, Shane G. (MIT) ; Lalanne, Louis (Leuven U.) ; Geldhof, Sarina (Leuven U.) ; Nichols, Miranda (Goteborg, ITP) ; Wang, Quanjun (Lanzhou U. (main)) ; van den Borne, Bram (Leuven U.) ; Chorlton, David (Manchester U.) et al.
To optimize the performance of the Collinear Resonance Ionization Spectroscopy (CRIS) experiment at CERN-ISOLDE, technical upgrades are continuously introduced, aiming to enhance its sensitivity, precision, stability, and efficiency. Recently, a voltage-scanning setup was developed and commissioned at CRIS, which improved the scanning speed by a factor of three as compared to the current laser-frequency scanning approach. [...]
arXiv:2303.15312.-
2023-05-17 - 10 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 541 (2023) 86-89
Fulltext: 2303.15312 - PDF; Publication - PDF;
In : 19th International Conference on Electromagnetic Isotope Separators and Related Topics (EMIS 2022), Daejeon, Korea, 3 - 7 Oct 2022, pp.86-89
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Investigating radioactive negative ion production via double electron capture
/ Nichols, M (Goteborg, ITP) ; Athanasakis-Kaklamanakis, M (CERN ; Leuven U.) ; Borschevsky, A (Groningen U.) ; Cocolios, T E (Leuven U.) ; Crosa-Rossa, R (Groningen U.) ; de Groote, R P (Leuven U.) ; Flanagan, K T (Manchester U.) ; Ruiz, R F Garcia (MIT) ; Geldhof, S (Leuven U.) ; Hanstorp, D (Goteborg, ITP) et al.
The relative cross sections for radioactive negative ion production via double electron capture have been measured for collisions between a 40 keV projectile beam of uranium-238 and potassium vapor. This was performed at the collinear resonance ionization spectroscopy (CRIS) experiment at CERN-ISOLDE and is a step towards measuring the electron affinities (EAs) of elements that cannot be efficiently produced in negative ion sources at radioactive ion beam (RIB) facilities. [...]
2023 - 4 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 541 (2023) 264-267
Fulltext: PDF;
In : 19th International Conference on Electromagnetic Isotope Separators and Related Topics (EMIS 2022), Daejeon, Korea, 3 - 7 Oct 2022, pp.264-267
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Measuring the electron affinity of polonium
/ Nichols, M ; Athanasakis-Kaklamanakis, M ; Balasmeh, Y ; Borschevsky, A ; Cocolios, T E ; Crosa-Rossa, R ; de Groote, R P ; Fajordo-Zambrano, C ; Flanagan, K T ; Garcia Ruiz, R F et al.
CERN-INTC-2023-011 ; INTC-007.
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